CN208234866U - A kind of liquefied natural gas purification device - Google Patents
A kind of liquefied natural gas purification device Download PDFInfo
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- CN208234866U CN208234866U CN201820817024.XU CN201820817024U CN208234866U CN 208234866 U CN208234866 U CN 208234866U CN 201820817024 U CN201820817024 U CN 201820817024U CN 208234866 U CN208234866 U CN 208234866U
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Abstract
The utility model provides a kind of liquefied natural gas purification device.Liquefied natural gas purification device includes depickling dewatering unit, de- heavy hydrocarbon unit is pre-chilled and adsorbs de- heavy hydrocarbon unit, the de- heavy hydrocarbon unit of pre-cooling is connected to the depickling dewatering unit and described adsorb takes off between heavy hydrocarbon unit, so that the liquefied natural gas purification device at least first carries out depickling dewatered unstripped gas to carry out adsorbing de- heavy hydrocarbon again after cooling takes off heavy hydrocarbon.The utility model first carries out the dewatered unstripped gas of depickling to freeze de- heavy hydrocarbon, then further uses and adsorb de- heavy hydrocarbon, it is not easy to adsorption tower be caused to penetrate Cold box blocking and freezing in such a way that the de- heavy hydrocarbon equipment of freezing and the de- heavy hydrocarbon equipment of absorption combine.
Description
Technical field
The utility model relates to chemical fields, in particular to a kind of liquefied natural gas purification device.
Background technique
Currently, liquefied natural gas (Liquefied Natural Gas, abbreviation LNG), main component is methane, is recognized
It is the energy most clean on the earth.In general, liquefied natural gas be purified natural gas compressed, be cooled to its boiling point (-
161.5 degrees Celsius) become liquid after temperature, usual LNG storage is in -161.5 degrees Celsius, the low temperature of 0.1MPa or so
In holding vessel.
But natural gas (unstripped gas) usually contains moisture, CO2With the impurity of heavy hydrocarbon, need remove be cleaned into purified gas it
It can be carried out liquefaction just afterwards to prepare liquefied natural gas.It is dehydrated de- heavy hydrocarbon technique and equipment using conventional, adsorption tower is will cause and penetrates,
Cause Cold box blocking and freezing.
Utility model content
One of the purpose of this utility model is to provide a kind of liquefied natural gas purification device.
At least one of in order to solve the above-mentioned technical problem, the utility model provides following technical scheme:
The utility model provides a kind of liquefied natural gas purification device, including depickling dewatering unit, the de- heavy hydrocarbon unit of pre-cooling
And de- heavy hydrocarbon unit is adsorbed, the de- heavy hydrocarbon unit of pre-cooling is connected to the depickling dewatering unit and the de- heavy hydrocarbon list of the absorption
Between member, so that the dewatered unstripped gas of depickling is at least first carried out cooling down after taking off heavy hydrocarbon again by the liquefied natural gas purification device
It carries out adsorbing de- heavy hydrocarbon.
Further, in the alternative embodiment of the utility model, the de- heavy hydrocarbon unit of pre-cooling includes natural gas supercooling
Device and the first heavy hydrocarbon separator, the natural gas subcooler are connected to the depickling dewatering unit and the first heavy hydrocarbon separator
Between, the first heavy hydrocarbon separator is connect with the de- heavy hydrocarbon unit of the absorption；
The natural gas subcooler is configured to the dewatered unstripped gas of depickling being cooled to preset temperature and is conveyed to institute
State the first heavy hydrocarbon separator, the first heavy hydrocarbon separator is configured to carry out unstripped gas after cooling gas-liquid separation and by gas
Body is conveyed to described adsorb and takes off heavy hydrocarbon unit.
Further, in the alternative embodiment of the utility model, it is described be pre-chilled de- heavy hydrocarbon unit include heat exchanger, it is natural
Gas subcooler and the first heavy hydrocarbon separator；
The heat exchanger is configured to be conveyed to the natural gas mistake after the dewatered unstripped gas of depickling is pre-chilled again
Cooler；The natural gas subcooler is configured to the unstripped gas after pre-cooling being cooled to preset temperature and is conveyed to first weight
Hydrocarbon separator, the first heavy hydrocarbon separator is configured to unstripped gas after cooling carrying out gas-liquid separation, and gas is conveyed
It is conveyed to the de- heavy hydrocarbon unit of the absorption again after carrying out heat exchange to the heat exchanger.
It further, further include regeneration gas circuit units in the alternative embodiment of the utility model, the regeneration gas is returned
Road unit includes regeneration air pipe and the second heavy hydrocarbon separator；
The regeneration air pipe be configured to for the regeneration gas for adsorbing de- heavy hydrocarbon unit being transported to the heat exchanger into
After row heat exchange, then it is transported to the second heavy hydrocarbon separator.
Further, in the alternative embodiment of the utility model, the liquefied natural gas purification device further includes regeneration
Gas subcooler, the regeneration air pipe are configured to the regeneration gas after the heat exchanger is exchanged heat being transported to institute
Regeneration gas subcooler is stated, the second heavy hydrocarbon separator is then entered back into.
Further, in the alternative embodiment of the utility model, the regeneration air pipe is configured to will be by described
Second heavy hydrocarbon separator, which takes off the regeneration gas after heavy hydrocarbon and is conveyed to after heat exchanger heat exchange to be conveyed to again, described to be adsorbed de- heavy hydrocarbon and sets
Standby unit.
Further, in the alternative embodiment of the utility model, the second heavy hydrocarbon separator is configured to remove
Heavy hydrocarbon be conveyed to the heat exchanger and exchange heat.
Further, in the alternative embodiment of the utility model, the first heavy hydrocarbon separator is configured to remove
Heavy hydrocarbon be conveyed to the heat exchanger and exchange heat.
Further, in the alternative embodiment of the utility model, the de- heavy hydrocarbon unit of pre-cooling includes heat exchanger, first
Heavy hydrocarbon separator, regeneration gas circuit units and refrigerant circuit unit, the heat exchanger are connected to the dewatering unit and described
Between one heavy hydrocarbon separator, the first heavy hydrocarbon separator is connect with the heat exchanger；
The heat exchanger is configured to the dewatered unstripped gas of depickling being cooled to preset temperature and is conveyed to described first
Heavy hydrocarbon separator, the first heavy hydrocarbon separator are configured to unstripped gas after cooling carrying out gas-liquid separation and convey gas
To the heat exchanger, then described adsorb will be conveyed to by the gas of heat exchange and takes off heavy hydrocarbon unit；
The regeneration gas circuit units include regeneration air pipe and the second heavy hydrocarbon separator；The regeneration air pipe is configured
It is transported to after the heat exchanger exchanged heat at by the regeneration gas for adsorbing de- heavy hydrocarbon unit, then is transported to second heavy hydrocarbon
Separator, the first heavy hydrocarbon separator are configured to the heavy hydrocarbon of removing being conveyed to the heat exchanger and exchange heat；Described
Two heavy hydrocarbon separators are configured to the heavy hydrocarbon of removing being conveyed to the heat exchanger and exchange heat；
The refrigerant circuit unit includes refrigerant circuit and throttle valve, and the refrigerant circuit unit is configured to cryogen is defeated
It gives the heat exchanger to exchange heat, being conveyed to the heat exchanger after then throttling by the throttle valve again is the heat exchanger
Cooling capacity is provided.
Further, in the alternative embodiment of the utility model, the de- heavy hydrocarbon unit of pre-cooling includes heat exchanger, first
Heavy hydrocarbon separator, regeneration gas circuit units and refrigerant circuit unit, the heat exchanger are connected to the depickling dewatering unit and institute
It states between the first heavy hydrocarbon separator；
The heat exchanger is configured to the dewatered unstripped gas of depickling being cooled to preset temperature and is conveyed to described first
Heavy hydrocarbon separator, the first heavy hydrocarbon separator are configured to unstripped gas after cooling carrying out gas-liquid separation and convey gas
To the heat exchanger, then described adsorb will be conveyed to by the gas of heat exchange and takes off heavy hydrocarbon unit；
The regeneration gas circuit units include regeneration air pipe and the second heavy hydrocarbon separator；The regeneration air pipe is configured
It is transported to after the heat exchanger exchanged heat at by the regeneration gas for adsorbing de- heavy hydrocarbon unit, then is transported to second heavy hydrocarbon
Separator, the regeneration air pipe are further configured to the gas that the second heavy hydrocarbon separator is isolated being conveyed to the absorption
De- heavy hydrocarbon unit；The first heavy hydrocarbon separator is configured to the heavy hydrocarbon of removing being conveyed to the heat exchanger and exchange heat；Institute
It states the second heavy hydrocarbon separator and is configured to the heavy hydrocarbon of removing being conveyed to the heat exchanger and exchange heat；
The refrigerant circuit unit includes refrigerant circuit, and the refrigerant circuit unit is configured to for cryogen being conveyed to described
Heat exchanger exchanges heat.
The beneficial effects of the utility model include: the liquefied natural gas purification dress that the utility model obtains by above-mentioned design
It sets, by way of freezing the de- heavy hydrocarbon equipment of de- heavy hydrocarbon equipment and absorption and combining, first carries out the dewatered unstripped gas of depickling
De- heavy hydrocarbon is freezed, then further using the de- heavy hydrocarbon of absorption, it is not easy to adsorption tower be caused to penetrate Cold box blocking and freezing.
Detailed description of the invention
It, below will be to required in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment
The attached drawing used is briefly described, it should be understood that the following drawings illustrates only some embodiments of the utility model, therefore not
It should be considered as the restriction to range, for those of ordinary skill in the art, without creative efforts,
It can also be obtained according to these attached drawings other relevant attached drawings.
Fig. 1 is the schematic diagram for the liquefied natural gas purification device that the utility model embodiment provides；
Fig. 2 is the schematic diagram for the liquefied natural gas purification device that the first embodiment of the utility model provides；
Fig. 3 is the schematic diagram for the liquefied natural gas purification device that second of embodiment of the utility model provides；
Fig. 4 is the schematic diagram for the liquefied natural gas purification device that the third embodiment of the utility model provides；
Fig. 5 is the schematic diagram for the liquefied natural gas purification device that the 4th kind of embodiment of the utility model provides；
Fig. 6 is the schematic diagram for the liquefied natural gas purification device that the 5th kind of embodiment of the utility model provides；
Fig. 7 is the schematic diagram for the liquefied natural gas purification device that the 6th kind of embodiment of the utility model provides.
Icon: depickling dewatering unit 100；Deacidification equipment 110；Dehydration equipment 120；De- heavy hydrocarbon unit 200 is pre-chilled；Natural gas
Subcooler 210；First heavy hydrocarbon separator 220；Heat exchanger 230；Second heavy hydrocarbon separator 240；Regeneration gas subcooler 250；Cryogen
Circuit units 260；Throttle valve 270；Adsorb de- heavy hydrocarbon unit 300.
Specific embodiment
It is practical below in conjunction with this to keep the purposes, technical schemes and advantages of the utility model embodiment clearer
The technical solution in the utility model embodiment is clearly and completely described in attached drawing in novel embodiment, shows
So, described embodiment is a part of embodiment of the utility model, rather than whole embodiments.It is practical based on this
Embodiment in novel, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment is fallen within the protection scope of the utility model.Therefore, the implementation to the utility model provided in the accompanying drawings below
The detailed description of mode is not intended to limit the range of claimed invention, but is merely representative of the utility model
Selected embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making creative labor
Every other embodiment obtained under the premise of dynamic, fall within the protection scope of the utility model.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.The meaning of " plurality " is two or two in the description of the present invention,
More than, unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, the terms such as term " connection " shall be understood in a broad sense,
For example, it may be being fixedly connected, it may be a detachable connection, or integral；It can be directly connected, centre can also be passed through
Medium is indirectly connected, and can be the connection inside two elements or the interaction relationship of two elements.For the general of this field
For logical technical staff, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
As shown in Figure 1, the utility model embodiment provides a kind of liquefied natural gas purification device, including depickling dehydration list
Member 100 is pre-chilled de- heavy hydrocarbon unit 200 and adsorbs de- heavy hydrocarbon unit 300, and de- heavy hydrocarbon unit 200 is pre-chilled and is connected to depickling dehydration
Unit 100 and adsorb between de- heavy hydrocarbon unit 300 so that liquefied natural gas purification device by the dewatered unstripped gas of depickling at least
It carries out adsorbing de- heavy hydrocarbon again after first carrying out cooling de- heavy hydrocarbon.Adsorbing de- heavy hydrocarbon unit 300 may include adsorbing tower with molecular sieve, molecule
Sieve adsorption tower can remove heavy hydrocarbon in a manner of absorption.
Further, depickling dewatering unit 100 may include depickling dehydration equipment 120 while remove acid and water, can also be with
Including deacidification equipment 110 and dehydration equipment 120, first depickling, then be dehydrated.
Further, as shown in Fig. 2, in the alternative embodiment of the utility model, it includes day that de- heavy hydrocarbon unit 200, which is pre-chilled,
Right gas subcooler 210 and the first heavy hydrocarbon separator 220, natural gas subcooler 210 are connected to depickling dewatering unit 100 and the first weight
Between hydrocarbon separator 220, the first heavy hydrocarbon separator 220 is connect with de- heavy hydrocarbon unit 300 is adsorbed.
Natural gas subcooler 210 is configured to the dewatered unstripped gas of depickling being cooled to preset temperature and is conveyed to first
Heavy hydrocarbon separator 220, the first heavy hydrocarbon separator 220 be configured to by unstripped gas after cooling carry out gas-liquid separation and by gas it is defeated
Give absorption de- heavy hydrocarbon unit 300.
Further, as shown in figure 3, in the alternative embodiment of the utility model, it includes changing that de- heavy hydrocarbon unit 200, which is pre-chilled,
Hot device 230, natural gas subcooler 210 and the first heavy hydrocarbon separator 220；
Heat exchanger 230 is configured to be conveyed to natural gas subcooler again after the dewatered unstripped gas of depickling is pre-chilled
210；Natural gas subcooler 210 is configured to the unstripped gas after pre-cooling being cooled to preset temperature and is conveyed to the separation of the first heavy hydrocarbon
Device 220, the first heavy hydrocarbon separator 220 is configured to unstripped gas after cooling carrying out gas-liquid separation, and delivers gas to and change
Hot device 230 is conveyed to the de- heavy hydrocarbon unit 300 of absorption after carrying out heat exchange again.
The dewatered unstripped gas of depickling can be pre-chilled in 230 one side of heat exchanger, and the unstripped gas after being then pre-chilled is again
It is further cooled down into natural subcooler, then unstripped gas after cooling enters the progress gas-liquid separation of the first heavy hydrocarbon separator 220.
The liquid of first heavy hydrocarbon separator 220 is mainly heavy hydrocarbon, and gas goes out heavy hydrocarbon by initial gross separation.And the gas and liquid
(heavy hydrocarbon) all has more cooling capacity, by the way that the gas and liquid exchange heat with heat exchanger 230, can make full use of gas and liquid
The cooling capacity cooling heat exchanger 230 of body, it is energy saving.It in other words, is mainly higher (such as the 49 DEG C of left sides of temperature in heat exchanger 230
It is right) unstripped gas and temperature lower (such as -20 DEG C or so) the gas isolated from the first heavy hydrocarbon separator 220 and liquid into
Row heat exchange.(49 DEG C or so) unstripped gas can be cooled to -11 DEG C or so by heat exchanger 230, then natural gas subcooler 210
Unstripped gas is further cooled to -20 DEG C, the energy consumption of natural gas subcooler 210 has been saved with this.It is separated from the first heavy hydrocarbon
The gas that device 220 is isolated is conveyed to the de- heavy hydrocarbon unit 300 of absorption further removing heavy hydrocarbon after the heat exchange of heat exchanger 230.
It further, further include regeneration gas circuit units as shown in figure 4, in the alternative embodiment of the utility model, then
Angry circuit units include regeneration air pipe and the second heavy hydrocarbon separator 240.
Regeneration air pipe is configured to the regeneration gas for adsorbing de- heavy hydrocarbon unit 300 being transported to heat exchanger 230 and exchange heat
Afterwards, then it is transported to the second heavy hydrocarbon separator 240.It further, further include refrigerant circuit unit 260.Refrigerant circuit unit 260 wraps
Refrigerant circuit and throttle valve 270 are included, refrigerant circuit unit 260 is configured to for cryogen to be conveyed to heat exchanger 230 and exchange heat, so
Being conveyed to heat exchanger 230 after throttling afterwards by throttle valve 270 again is that heat exchanger 230 provides cooling capacity.
Further, as shown in figure 5, in the alternative embodiment of the utility model, liquefied natural gas purification device is also wrapped
Regeneration gas subcooler 250 is included, regeneration air pipe is configured to for the regeneration gas after heat exchanger 230 is exchanged heat being transported to again
Then angry subcooler 250 enters back into the second heavy hydrocarbon separator 240.
Further, in the alternative embodiment of the utility model, regeneration air pipe is configured to that the second heavy hydrocarbon will be passed through
Separator 240 takes off the regeneration gas after heavy hydrocarbon and is conveyed to after heat exchanger 230 exchanges heat is conveyed to the de- heavy hydrocarbon unit of absorption again.
Further, in the alternative embodiment of the utility model, what the second heavy hydrocarbon separator 240 was configured to remove
Heavy hydrocarbon is conveyed to heat exchanger 230 and exchanges heat.
Further, in the alternative embodiment of the utility model, what the first heavy hydrocarbon separator 220 was configured to remove
Heavy hydrocarbon is conveyed to heat exchanger 230 and exchanges heat.
Further, as shown in fig. 6, in the alternative embodiment of the utility model, it includes changing that de- heavy hydrocarbon unit 200, which is pre-chilled,
Hot device 230, the first heavy hydrocarbon separator 220, regeneration gas circuit units and refrigerant circuit unit 260, heat exchanger 230 are connected to dehydration
Between unit and the first heavy hydrocarbon separator 220, the first heavy hydrocarbon separator 220 is connect with heat exchanger 230.
Heat exchanger 230 is configured to the dewatered unstripped gas of depickling being cooled to preset temperature and is conveyed to the first heavy hydrocarbon point
From device 220, the first heavy hydrocarbon separator 220 is configured to that unstripped gas after cooling is carried out to gas-liquid separation and is delivered gas to change
Then hot device 230 will be conveyed to the de- heavy hydrocarbon unit 300 of absorption by the gas of heat exchange；First heavy hydrocarbon separator 220 is configured to
The heavy hydrocarbon of removing is conveyed to heat exchanger 230 to exchange heat.
Regeneration gas circuit units include regeneration air pipe and the second heavy hydrocarbon separator 240；Regeneration air pipe be configured to by
The regeneration gas for adsorbing de- heavy hydrocarbon unit 300 is transported to after heat exchanger 230 exchanged heat, then is transported to the second heavy hydrocarbon separator 240,
Second heavy hydrocarbon separator 240 is configured to the heavy hydrocarbon of removing being conveyed to heat exchanger 230 and exchange heat.
Refrigerant circuit unit 260 includes refrigerant circuit and throttle valve 270, and refrigerant circuit unit 260 is configured to cryogen
It is conveyed to heat exchanger 230 to exchange heat, being conveyed to heat exchanger 230 after then throttling by throttle valve 270 again is that heat exchanger 230 mentions
Semen donors.
Regeneration gas subcooler 250 and natural gas subcooler 210 are omitted compared with embodiment shown in fig. 5, in Fig. 6, and
The direct heat exchanging device 230 of refrigerant circuit unit 260 is increased to cool down.
Further, as shown in fig. 7, in the alternative embodiment of the utility model, it includes changing that de- heavy hydrocarbon unit 200, which is pre-chilled,
Hot device 230, the first heavy hydrocarbon separator 220, regeneration gas circuit units and refrigerant circuit unit 260, heat exchanger 230 are connected to depickling
Between dewatering unit 100 and the first heavy hydrocarbon separator 220.
Heat exchanger 230 is configured to the dewatered unstripped gas of depickling being cooled to preset temperature and is conveyed to the first heavy hydrocarbon point
From device 220, the first heavy hydrocarbon separator 220 is configured to that unstripped gas after cooling is carried out to gas-liquid separation and is delivered gas to change
Then hot device 230 will be conveyed to the de- heavy hydrocarbon unit 300 of absorption by the gas of heat exchange；First heavy hydrocarbon separator 220 is configured to
The heavy hydrocarbon of removing is conveyed to heat exchanger 230 to exchange heat.
Regeneration gas circuit units include regeneration air pipe and the second heavy hydrocarbon separator 240；Regeneration air pipe be configured to by
The regeneration gas for adsorbing de- heavy hydrocarbon unit 300 is transported to after heat exchanger 230 exchanged heat, then is transported to the second heavy hydrocarbon separator 240；
Second heavy hydrocarbon separator 240 is configured to the heavy hydrocarbon of removing being conveyed to heat exchanger 230 and exchange heat；
Refrigerant circuit unit 260 includes refrigerant circuit, and refrigerant circuit unit 260 is configured to cryogen being conveyed to heat exchanger
230 exchange heat.
The present embodiment also provides a kind of liquefied natural gas purification method, comprising: is pre-chilled to depickling, dewatered unstripped gas
Preset temperature carries out that de- heavy hydrocarbon is pre-chilled；It will carry out adsorbing de- heavy hydrocarbon by the unstripped gas that de- heavy hydrocarbon is pre-chilled.By freezing de- heavy hydrocarbon
The mode combined with the de- heavy hydrocarbon of absorption, first carries out the dewatered unstripped gas of depickling to freeze de- heavy hydrocarbon, then further use
Adsorb de- heavy hydrocarbon, it is not easy to adsorption tower be caused to penetrate Cold box blocking and freezing.
The above is only preferred embodiments of the present invention, are not intended to limit the utility model, for ability
For the technical staff in domain, various modifications and changes may be made to the present invention.It is all the spirit and principles of the utility model it
Interior, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (9)
1. a kind of liquefied natural gas purification device, which is characterized in that including depickling dewatering unit, de- heavy hydrocarbon unit and suction is pre-chilled
Attached de- heavy hydrocarbon unit, it is described be pre-chilled de- heavy hydrocarbon unit be connected to the depickling dewatering unit and it is described adsorb de- heavy hydrocarbon unit it
Between, so that the liquefied natural gas purification device carries out again after the dewatered unstripped gas of depickling at least first to be carried out to cooling de- heavy hydrocarbon
Adsorb de- heavy hydrocarbon.
2. liquefied natural gas purification device according to claim 1, which is characterized in that the pre-cooling takes off heavy hydrocarbon unit and includes
Natural gas subcooler and the first heavy hydrocarbon separator, the natural gas subcooler are connected to the depickling dewatering unit and described first
Between heavy hydrocarbon separator, the first heavy hydrocarbon separator is connect with the de- heavy hydrocarbon unit of the absorption；
The natural gas subcooler is configured to for the dewatered unstripped gas of depickling being cooled to preset temperature and is conveyed to described
One heavy hydrocarbon separator, the first heavy hydrocarbon separator be configured to by unstripped gas after cooling carry out gas-liquid separation and by gas it is defeated
It gives described adsorb and takes off heavy hydrocarbon unit.
3. liquefied natural gas purification device according to claim 1, which is characterized in that the pre-cooling takes off heavy hydrocarbon unit and includes
Heat exchanger, natural gas subcooler and the first heavy hydrocarbon separator；
The heat exchanger is configured to be conveyed to the natural gas subcooler after the dewatered unstripped gas of depickling is pre-chilled again；
The natural gas subcooler is configured to the unstripped gas after pre-cooling being cooled to preset temperature and is conveyed to first heavy hydrocarbon point
From device, the first heavy hydrocarbon separator is configured to unstripped gas after cooling carrying out gas-liquid separation, and delivers gas to institute
It states after heat exchanger carries out heat exchange and is conveyed to the de- heavy hydrocarbon unit of the absorption again.
4. liquefied natural gas purification device according to claim 3, which is characterized in that it further include regeneration gas circuit units,
The regeneration gas circuit units include regeneration air pipe and the second heavy hydrocarbon separator；
The regeneration air pipe is configured to the regeneration gas for adsorbing de- heavy hydrocarbon unit being transported to the heat exchanger and change
After heat, then it is transported to the second heavy hydrocarbon separator.
5. liquefied natural gas purification device according to claim 4, which is characterized in that the liquefied natural gas purification device
It further include regeneration gas subcooler, the regeneration air pipe is configured to the regeneration after the heat exchanger is exchanged heat
Gas is transported to the regeneration gas subcooler, then enters back into the second heavy hydrocarbon separator.
6. liquefied natural gas purification device according to claim 5, which is characterized in that the second heavy hydrocarbon separator is matched
It is set to and the heavy hydrocarbon of removing is conveyed to the heat exchanger exchanges heat.
7. the liquefied natural gas purification device according to claim 3 or 5, which is characterized in that the first heavy hydrocarbon separator
It is configured to the heavy hydrocarbon of removing being conveyed to the heat exchanger and exchange heat.
8. liquefied natural gas purification device according to claim 1, which is characterized in that the pre-cooling takes off heavy hydrocarbon unit and includes
Heat exchanger, the first heavy hydrocarbon separator, regeneration gas circuit units and refrigerant circuit unit, it is single that the heat exchanger is connected to the dehydration
Between the first and described first heavy hydrocarbon separator, the first heavy hydrocarbon separator is connect with the heat exchanger；
The heat exchanger is configured to the dewatered unstripped gas of depickling being cooled to preset temperature and is conveyed to first heavy hydrocarbon
Separator, the first heavy hydrocarbon separator are configured to unstripped gas after cooling carrying out gas-liquid separation and deliver gas to institute
Heat exchanger is stated, then described adsorb will be conveyed to by the gas of heat exchange and takes off heavy hydrocarbon unit；The first heavy hydrocarbon separator is matched
It is set to and the heavy hydrocarbon of removing is conveyed to the heat exchanger exchanges heat；
The regeneration gas circuit units include regeneration air pipe and the second heavy hydrocarbon separator；The regeneration air pipe be configured to by
The regeneration gas for adsorbing de- heavy hydrocarbon unit is transported to after the heat exchanger exchanged heat, then is transported to the second heavy hydrocarbon separation
Device, the second heavy hydrocarbon separator are configured to the heavy hydrocarbon of removing being conveyed to the heat exchanger and exchange heat；
The refrigerant circuit unit includes refrigerant circuit and throttle valve, and the refrigerant circuit unit is configured to for cryogen being conveyed to
The heat exchanger exchanges heat, and is conveyed to the heat exchanger again after then throttling by the throttle valve and provides for the heat exchanger
Cooling capacity.
9. liquefied natural gas purification device according to claim 1, which is characterized in that the pre-cooling takes off heavy hydrocarbon unit and includes
Heat exchanger, the first heavy hydrocarbon separator, regeneration gas circuit units and refrigerant circuit unit, it is de- that the heat exchanger is connected to the depickling
Between water unit and the first heavy hydrocarbon separator；
The heat exchanger is configured to the dewatered unstripped gas of depickling being cooled to preset temperature and is conveyed to first heavy hydrocarbon
Separator, the first heavy hydrocarbon separator are configured to unstripped gas after cooling carrying out gas-liquid separation and deliver gas to institute
Heat exchanger is stated, then described adsorb will be conveyed to by the gas of heat exchange and takes off heavy hydrocarbon unit；The first heavy hydrocarbon separator is matched
It is set to and the heavy hydrocarbon of removing is conveyed to the heat exchanger exchanges heat；
The regeneration gas circuit units include regeneration air pipe and the second heavy hydrocarbon separator；The regeneration air pipe be configured to by
The regeneration gas for adsorbing de- heavy hydrocarbon unit is transported to after the heat exchanger exchanged heat, then is transported to the second heavy hydrocarbon separation
Device；The second heavy hydrocarbon separator is configured to the heavy hydrocarbon of removing being conveyed to the heat exchanger and exchange heat；
The refrigerant circuit unit includes refrigerant circuit, and the refrigerant circuit unit is configured to for cryogen to be conveyed to the heat exchange
Device exchanges heat.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820817024.XU CN208234866U (en) | 2018-05-29 | 2018-05-29 | A kind of liquefied natural gas purification device |
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| CN201820817024.XU CN208234866U (en) | 2018-05-29 | 2018-05-29 | A kind of liquefied natural gas purification device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108485740A (en) * | 2018-05-29 | 2018-09-04 | 成都赛普瑞兴科技有限公司 | A kind of liquefied natural gas purifier and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108485740A (en) * | 2018-05-29 | 2018-09-04 | 成都赛普瑞兴科技有限公司 | A kind of liquefied natural gas purifier and method |
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